The Receiver sight (peep) is always a good compromise and it will give you a 300 yard gun...I like it better than a shallow V, but I do like the shallow V as my second and close choice...

For DG a peep is the answer on the really big bores like 458 Lott an up..I like them with a sourdough post, I get my posts for NECG...or I have a few old Redfields rat holes away...

Another good option for a rear sigh is a deep V sight used in coordination with a post and sighted in with the post at the top level of the V...This works wonderfully on dangerous game and it quick and simular to a peep in quickness and accuracy...